Staff View: Lightning: a bolt from the blue

Lightning: a bolt from the blue

To the electric utility engineer, the parameters of the flash that are of primary interest are the crest current for the first and subsequent strokes, the waveshape of these currents, correlation between the parameters, the number of strokes per flash and flash incidence rates where the ground flash...

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Main Author:	Ab Kadir, Mohd Zainal Abidin
Format:	Inaugural Lecture
Language:	English
Published:	Universiti Putra Malaysia Press 2017
Online Access:	http://psasir.upm.edu.my/id/eprint/66857/1/20170725180651prof_zainal_lightning_a_Bolt_from_the_blue.pdf http://psasir.upm.edu.my/id/eprint/66857/ http://www.pnc.upm.edu.my/upload/dokumen/20170725180651prof_zainal_lightning_a_Bolt_from_the_blue.pdf
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id	my.upm.eprints.66857
record_format	eprints
spelling	my.upm.eprints.668572019-03-04T00:35:28Z http://psasir.upm.edu.my/id/eprint/66857/ Lightning: a bolt from the blue Ab Kadir, Mohd Zainal Abidin To the electric utility engineer, the parameters of the flash that are of primary interest are the crest current for the first and subsequent strokes, the waveshape of these currents, correlation between the parameters, the number of strokes per flash and flash incidence rates where the ground flash density is denoted as flashes per square km-year and symbolised by Ng. The first three parameters, as we know them today, are to a very large extent based on the measurements of Berger. Berger’s masts, 70 and 80 metres high, were mounted atop Mt. San Salvatore (Switzerland), which is 650 metres above Lake Lugano, where it can be readily noted that these 125 records represent one of the best and most extensive sets of data available to the industry to date. This inaugural talk focuses on the lightning severity scenario in Malaysia, which could also be applicable to other tropical countries, and some of the useful parameters for lightning protection system design and forensic study. Some specific engineering applications and solutions are summarised, taking into account various lightning parameters, available from past and current measurements. These include the first national circular on lightning protection system installation for buildings, lightning protection guide on building and recently released guidebook on lightning protection for photovoltaic (PV) systems published by the Energy Commission of Malaysia and Sustainable Energy Development Authority (SEDA), respectively. It is He who shows you lightning, [causing] fear and aspiration, and generates the heavy clouds. And the thunder exalts [Allah] with praise of Him - and the angels [as well] from fear of Him - and He sends thunderbolts and strikes therewith whom He wills while they dispute about Allah; and He is severe in assault. [Ar-Ra’ad: 12-13] Universiti Putra Malaysia Press 2017 Inaugural Lecture NonPeerReviewed text en http://psasir.upm.edu.my/id/eprint/66857/1/20170725180651prof_zainal_lightning_a_Bolt_from_the_blue.pdf Ab Kadir, Mohd Zainal Abidin (2017) Lightning: a bolt from the blue. [Inaugural Lecture] http://www.pnc.upm.edu.my/upload/dokumen/20170725180651prof_zainal_lightning_a_Bolt_from_the_blue.pdf
institution	Universiti Putra Malaysia
building	UPM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Putra Malaysia
content_source	UPM Institutional Repository
url_provider	http://psasir.upm.edu.my/
language	English
description	To the electric utility engineer, the parameters of the flash that are of primary interest are the crest current for the first and subsequent strokes, the waveshape of these currents, correlation between the parameters, the number of strokes per flash and flash incidence rates where the ground flash density is denoted as flashes per square km-year and symbolised by Ng. The first three parameters, as we know them today, are to a very large extent based on the measurements of Berger. Berger’s masts, 70 and 80 metres high, were mounted atop Mt. San Salvatore (Switzerland), which is 650 metres above Lake Lugano, where it can be readily noted that these 125 records represent one of the best and most extensive sets of data available to the industry to date. This inaugural talk focuses on the lightning severity scenario in Malaysia, which could also be applicable to other tropical countries, and some of the useful parameters for lightning protection system design and forensic study. Some specific engineering applications and solutions are summarised, taking into account various lightning parameters, available from past and current measurements. These include the first national circular on lightning protection system installation for buildings, lightning protection guide on building and recently released guidebook on lightning protection for photovoltaic (PV) systems published by the Energy Commission of Malaysia and Sustainable Energy Development Authority (SEDA), respectively. It is He who shows you lightning, [causing] fear and aspiration, and generates the heavy clouds. And the thunder exalts [Allah] with praise of Him - and the angels [as well] from fear of Him - and He sends thunderbolts and strikes therewith whom He wills while they dispute about Allah; and He is severe in assault. [Ar-Ra’ad: 12-13]
format	Inaugural Lecture
author	Ab Kadir, Mohd Zainal Abidin
spellingShingle	Ab Kadir, Mohd Zainal Abidin Lightning: a bolt from the blue
author_facet	Ab Kadir, Mohd Zainal Abidin
author_sort	Ab Kadir, Mohd Zainal Abidin
title	Lightning: a bolt from the blue
title_short	Lightning: a bolt from the blue
title_full	Lightning: a bolt from the blue
title_fullStr	Lightning: a bolt from the blue
title_full_unstemmed	Lightning: a bolt from the blue
title_sort	lightning: a bolt from the blue
publisher	Universiti Putra Malaysia Press
publishDate	2017
url	http://psasir.upm.edu.my/id/eprint/66857/1/20170725180651prof_zainal_lightning_a_Bolt_from_the_blue.pdf http://psasir.upm.edu.my/id/eprint/66857/ http://www.pnc.upm.edu.my/upload/dokumen/20170725180651prof_zainal_lightning_a_Bolt_from_the_blue.pdf
_version_	1643838732643598336
score	13.211869

Lightning: a bolt from the blue

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